Home
Class 12
PHYSICS
Two capacitors C1=1muF and C2=3muF each ...

Two capacitors `C_1=1muF` and `C_2=3muF` each are charged to a potential difference of `100V` but with opposite polarity as shown in the figure. When the switch `S` is closed, the new potential difference between the points `a` and `b` is

A

`200V`

B

`100V`

C

`50V`

D

`25V`

Text Solution

Verified by Experts

The correct Answer is:
C
Total charge `=3xx100-1xx100=200muC`
common potential (in parallel) after S is closed is
`V=("total charge")/("Total capacity")`
`=(200muC)/(4muF)`
`=50V`
Promotional Banner

Topper's Solved these Questions

  • CAPACITORS

    DC PANDEY|Exercise OBJECTIVE_TYPE|1 Videos

  • CAPACITORS

    DC PANDEY|Exercise OBJECTIVE_TYPE|1 Videos

  • ATOMS

    DC PANDEY|Exercise MEDICAL ENTRANCES GALLERY|42 Videos

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Subjective|11 Videos

Similar Questions

Explore conceptually related problems

The ratio of potential differences between 1muF and 5muF capacitors is

Two capacitors 3muF and 6muF are connected in series across a potential difference of 120V . Then the potential difference across 3muF capacitor is:

What is the potential difference across 2muF capacitor in the circuit shown?

Two capacitors A and B with capacitors 3 muF and 2 muF are charged to a potential difference of 100 V and 180 V respectively. One plate of two capacitors are connected as shown. Now switch S is closed so as to connect a cell of 100 V to the free plates of two capacitors. (a) Find charge on the two capacitors after the switch is closed. (b) Calculate heat generated in the circuit

Two capacitors of capacitance 2muF and 4muF respectively are charged to a potential of 12 V. they are now connected to each other, with the positive plate of each joined to the negative plate of the other. The potential difference across each capacitor will be

DC PANDEY-CAPACITORS-Exercise
  1. The current in 1Omega resistance and charge stored in the capacitor ar...

    Text Solution

    |

  2. A capacitor C is connected to two equal resistances as shown in the fi...

    Text Solution

    |

  3. Two capacitors C1=1muF and C2=3muF each are charged to a potential dif...

    Text Solution

    |

  4. Four capacitors are connected as shown in figuere to a 30 V battery. T...

    Text Solution

    |

  5. Three uncharged capacitors of capacitance C1,C2 and C3 are connected t...

    Text Solution

    |

  6. In the circuit shown in figure potential difference between the points...

    Text Solution

    |

  7. Two cellls, two resistance and two capacitors are connected as shown i...

    Text Solution

    |

  8. In the circuit shown in figure, the capacitor is charged with a cell o...

    Text Solution

    |

  9. The potential difference between points a and b of circuits shown in f...

    Text Solution

    |

  10. A capacitors C1 is charged to a potential V and connected to another c...

    Text Solution

    |

  11. In the circuit diagram the current through the battery immediately aft...

    Text Solution

    |

  12. In the circuit shown switch S is closed at t=0. Let i1 and i2 be the c...

    Text Solution

    |

  13. A charged capacitor is allowed to dischare through a resistor by clos...

    Text Solution

    |

  14. Five identical capacitor plates are arranged such that they make four ...

    Text Solution

    |

  15. A capacitor of capacitance C is charged to a potential difference V fr...

    Text Solution

    |

  16. X and Y are large, parallel conducting plates close to each other. Eac...

    Text Solution

    |

  17. In the circuit shown in the figure, switch S is closed at time t=0. Se...

    Text Solution

    |

  18. An electrical circuit is shown in the given figure. The resistance of ...

    Text Solution

    |

  19. In the circuit shown, A and B are equal resistances. When S is closed,...

    Text Solution

    |

  20. A parallel plate capacitor is charged from a cell and then isolated fr...

    Text Solution

    |